Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg
Many populations of southern hemisphere baleen whales are recovering and are again becoming dominant consumers in the Southern Ocean. Key to understanding the present and future role of baleen whales in Southern Ocean ecosystems is determining their abundance on foraging grounds. Distance sampling i...
Main Authors: | , , , , , , |
---|---|
Format: | Still Image |
Language: | unknown |
Published: |
2023
|
Subjects: | |
Online Access: | https://doi.org/10.3389/fmars.2023.1048869.s003 https://figshare.com/articles/figure/Image_2_Assessing_the_viability_of_estimating_baleen_whale_abundance_from_tourist_vessels_jpeg/22192567 |
id |
ftfrontimediafig:oai:figshare.com:article/22192567 |
---|---|
record_format |
openpolar |
spelling |
ftfrontimediafig:oai:figshare.com:article/22192567 2023-05-15T13:54:48+02:00 Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg Angus Fleetwood Henderson Mark Andrew Hindell Simon Wotherspoon Martin Biuw Mary-Anne Lea Nat Kelly Andrew Damon Lowther 2023-03-01T04:41:04Z https://doi.org/10.3389/fmars.2023.1048869.s003 https://figshare.com/articles/figure/Image_2_Assessing_the_viability_of_estimating_baleen_whale_abundance_from_tourist_vessels_jpeg/22192567 unknown doi:10.3389/fmars.2023.1048869.s003 https://figshare.com/articles/figure/Image_2_Assessing_the_viability_of_estimating_baleen_whale_abundance_from_tourist_vessels_jpeg/22192567 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Southern Ocean (Atlantic sector) distance sampling density surface modeling (DSM) West Antarctic peninsula (WAP) CCAMLR GAM (generalized additive model) Krill fishery platforms of opportunity Image Figure 2023 ftfrontimediafig https://doi.org/10.3389/fmars.2023.1048869.s003 2023-03-02T00:09:24Z Many populations of southern hemisphere baleen whales are recovering and are again becoming dominant consumers in the Southern Ocean. Key to understanding the present and future role of baleen whales in Southern Ocean ecosystems is determining their abundance on foraging grounds. Distance sampling is the standard method for estimating baleen whale abundance but requires specific logistic requirements which are rarely achieved in the remote Southern Ocean. We explore the potential use of tourist vessel-based sampling as a cost-effective solution for conducting distance sampling surveys for baleen whales in the Southern Ocean. We used a dataset of tourist vessel locations from the southwest Atlantic sector of the Southern Ocean and published knowledge from Southern Ocean sighting surveys to determine the number of tourist vessel voyages required for robust abundance estimates. Second, we simulated the abundance and distributions of four baleen whale species for the study area and sampled them with both standardized line transect surveys and non-standardized tourist vessel-based surveys, then compared modeled abundance and distributions from each survey to the original simulation. For the southwest Atlantic, we show that 12-22 tourist vessel voyages are likely required to estimate abundance for humpback and fin whales, with relative estimates for blue, sei, Antarctic minke, and southern right whales. Second, we show tourist vessel-based surveys outperformed standardized line transect surveys at reproducing simulated baleen whale abundances and distribution. These analyses suggest tourist vessel-based surveys are a viable method for estimating baleen whale abundance in remote regions. For the southwest Atlantic, the relatively cost-effective nature of tourist vessel-based survey and regularity of tourist vessel voyages could allow for annual and intra-annual estimates of abundance, a fundamental improvement on current methods, which may capture spatiotemporal trends in baleen whale movements on forging grounds. ... Still Image Antarc* Antarctic Antarctic Peninsula baleen whale baleen whales Southern Ocean Frontiers: Figshare Antarctic Antarctic Peninsula Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) Southern Ocean |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Southern Ocean (Atlantic sector) distance sampling density surface modeling (DSM) West Antarctic peninsula (WAP) CCAMLR GAM (generalized additive model) Krill fishery platforms of opportunity |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Southern Ocean (Atlantic sector) distance sampling density surface modeling (DSM) West Antarctic peninsula (WAP) CCAMLR GAM (generalized additive model) Krill fishery platforms of opportunity Angus Fleetwood Henderson Mark Andrew Hindell Simon Wotherspoon Martin Biuw Mary-Anne Lea Nat Kelly Andrew Damon Lowther Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering Southern Ocean (Atlantic sector) distance sampling density surface modeling (DSM) West Antarctic peninsula (WAP) CCAMLR GAM (generalized additive model) Krill fishery platforms of opportunity |
description |
Many populations of southern hemisphere baleen whales are recovering and are again becoming dominant consumers in the Southern Ocean. Key to understanding the present and future role of baleen whales in Southern Ocean ecosystems is determining their abundance on foraging grounds. Distance sampling is the standard method for estimating baleen whale abundance but requires specific logistic requirements which are rarely achieved in the remote Southern Ocean. We explore the potential use of tourist vessel-based sampling as a cost-effective solution for conducting distance sampling surveys for baleen whales in the Southern Ocean. We used a dataset of tourist vessel locations from the southwest Atlantic sector of the Southern Ocean and published knowledge from Southern Ocean sighting surveys to determine the number of tourist vessel voyages required for robust abundance estimates. Second, we simulated the abundance and distributions of four baleen whale species for the study area and sampled them with both standardized line transect surveys and non-standardized tourist vessel-based surveys, then compared modeled abundance and distributions from each survey to the original simulation. For the southwest Atlantic, we show that 12-22 tourist vessel voyages are likely required to estimate abundance for humpback and fin whales, with relative estimates for blue, sei, Antarctic minke, and southern right whales. Second, we show tourist vessel-based surveys outperformed standardized line transect surveys at reproducing simulated baleen whale abundances and distribution. These analyses suggest tourist vessel-based surveys are a viable method for estimating baleen whale abundance in remote regions. For the southwest Atlantic, the relatively cost-effective nature of tourist vessel-based survey and regularity of tourist vessel voyages could allow for annual and intra-annual estimates of abundance, a fundamental improvement on current methods, which may capture spatiotemporal trends in baleen whale movements on forging grounds. ... |
format |
Still Image |
author |
Angus Fleetwood Henderson Mark Andrew Hindell Simon Wotherspoon Martin Biuw Mary-Anne Lea Nat Kelly Andrew Damon Lowther |
author_facet |
Angus Fleetwood Henderson Mark Andrew Hindell Simon Wotherspoon Martin Biuw Mary-Anne Lea Nat Kelly Andrew Damon Lowther |
author_sort |
Angus Fleetwood Henderson |
title |
Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg |
title_short |
Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg |
title_full |
Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg |
title_fullStr |
Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg |
title_full_unstemmed |
Image_2_Assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg |
title_sort |
image_2_assessing the viability of estimating baleen whale abundance from tourist vessels.jpeg |
publishDate |
2023 |
url |
https://doi.org/10.3389/fmars.2023.1048869.s003 https://figshare.com/articles/figure/Image_2_Assessing_the_viability_of_estimating_baleen_whale_abundance_from_tourist_vessels_jpeg/22192567 |
long_lat |
ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Antarctic Antarctic Peninsula Gam Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Gam Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula baleen whale baleen whales Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula baleen whale baleen whales Southern Ocean |
op_relation |
doi:10.3389/fmars.2023.1048869.s003 https://figshare.com/articles/figure/Image_2_Assessing_the_viability_of_estimating_baleen_whale_abundance_from_tourist_vessels_jpeg/22192567 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2023.1048869.s003 |
_version_ |
1766260927490949120 |